S = 5 + 10 + 15 + 20 +25 ...10
45
S = 2+ 4 + 6 + 8 + 10
4610
30
djsdadsd
S = 4 + 8 + 12
S = 3 + 6 + 9 + 12 + 15
S = 6 + 12 + 18 + 24... 10
sdd
330
275
S = 230 + 240 + 250 + 260 + 270... 438
24
